METHOD FOR MANUFACTURING DEGRADABLE PAPER MULCHES USING COTTON LINTERS

Title:

METHOD FOR MANUFACTURING DEGRADABLE PAPER MULCHES USING COTTON LINTERS

Document Type and Number:

WIPO Patent Application WO/2017/166859

Kind Code:

A1

Abstract:

A method for manufacturing degradable paper mulches using cotton linters, comprising the following steps: (1) feeding cotton linters and additives to a twin-screw pulping machine for kneading and fiber separation, the additives being KOH and sodium tripolyphosphate; (2) conveying the pulp obtained by means of kneading and fiber separation to a holdup tank, standing for a reaction of 65-70 min, and then performing digestion, washing, residue removal, and beating; and (3) conveying the pulp treated in step (2) to a papermaking machine, so as to make paper mulches, 120-130 kg of cornstarch, 15-20 kg of a paper wet-strength agent, and 10-12 kg of a paper water-proofing and damp-proofing agent being added to pulp during papermaking per ton. High papermaking efficiency of 90-95% can be achieved; wastewater produced in the system has a high b/c ratio and is easy to biodegrade; the manufactured paper mulches contain a large amount of phosphorus and potassium, and therefore can provide nutrients for the growth of cotton after being degraded; as compared with conventional plastic mulches, 1/3 of the costs can be saved.

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WO/2023/128415	CIGAR WRAPPER AND HEATING-TYPE SMOKING PRODUCT INCLUDING SAME
WO/2013/013813	COMPOSITIONS FOR USE IN THE WET-END OF PAPERMAKING
WO/2022/003139	FIBROUS COMPOSITION FOR A SHEET OF PAPER, IN PARTICULAR SECURITY PAPER

Inventors:

TENG TIESHENG (CN)
ZHANG YUEPING (CN)

Application Number:

PCT/CN2016/108934

Publication Date:

October 05, 2017

Filing Date:

December 07, 2016

Export Citation:

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Assignee:

XINJIANG GUOLIYUAN INVEST CO LTD (CN)

International Classes:

D21H11/12

Foreign References:

CN105821700A	2016-08-03
CN101629398A	2010-01-20
CN105178076A	2015-12-23
CN102943414A	2013-02-27
CN105256636A	2016-01-20
CN105297516A	2016-02-03
JP2014198921A	2014-10-23

Attorney, Agent or Firm:

BEIJING CHINAGOUB INTELLECTUAL PROPERTY AGENT LTD. (CN)

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